I think it will depend on if they plan to upgrade stretch’s of the existing CN VIA track lines or build new corridors. I saw a rumour that the Fallowfield station / line was being considered for Ottawa HSR.
I think they will probably consider its connection or location near the existing commuter rail lines in both cities.












Not an arm chair general but I found this former finnish officer’s take on the outcomes interesting / educational: https://youtu.be/8hdthsG8tks